Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3

Details Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3 Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3

1983-07-05

1985-07-16

Kight, John

Compositions: coating or plastic

Materials or ingredients

106302, C04B 3100

Patent

active

045294488

ABSTRACT:
Yellow to orange-red bismuth oxide-chromium oxide mixed phase pigments having a specific surface from about 1 to 10 m.sup.2 /g and the composition Bi.sub.2-x Cr.sub.x O.sub.3 wherein x is from about 0.05 to 0.5 are produced by mixing the appropriate quantities of finely disperse bismuth-(III)- and chromium-(III)- or chromium-(VI)-compounds, calcining the mixture in air at a temperature from about 500.degree. to 800.degree. C. and subsequently grinding. The products are suitable for pigmenting lacquers, plastics and dispersion dyes.

REFERENCES:
patent: 2313619 (1945-03-01), Bruce
patent: 2369261 (1945-02-01), Slonim
patent: 3072495 (1963-01-01), Pitrot
patent: 3864140 (1975-02-01), Ferrigno
Chem. Abst., vol. 98, (24), 6-1983, p. 430, No. 205154y, "Synthesis and Properties of Phases in the Bismuth trioxide System".
Chemical Abstract, vol. 72, No. 14, Apr. 6, 1970, p. 411, No. 71837a, Columbus, Ohio, Kunio Masuno: "Crystal Studies of the Bi.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 System" & Nippon Kagaku Zasshi 1969, 90(11), 1122-7.
Chemical Abstract, vol. 88, No. 24, Jun. 12, 1978, p. 490, No. 177845x, Columbus, Ohio, Masanori Inada: "Crystal Phases of Nonohmic Zinc Oxide Ceramics" & JPN. J. Appl. Phys., 1978, 17(1), 1-10.

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